What is The Difference Between OPAL And ALF, Programming Languages

OPAL is an Interpreted Programming Language, while ALF is a Logic-based Programming Language

What are Interpreted Programming Languages

An interpreted language is a programming language for which most of its implementations execute instructions directly, without previously compiling a program into machine-language instructions. The interpreter executes the program directly, translating each statement into a sequence of one or more subroutines already compiled into machine code. (Wikipedia)

What are Logic-based Programming Languages

Logic programming is a type of programming paradigm which is largely based on formal logic. Any program written in a logic programming language is a set of sentences in logical form, expressing facts and rules about some problem domain. (Wikipedia)

While OPAL is an Interpreted Programming Language, and ALF is a Logic-based Programming Language

Let us now look at the difference between the two:

What is OPAL Programming Language – A brief synopsis

The name stands for Optimized Applicative Language and is a functional programming language developed at the Technical University of Berlin.

What is ALF Programming Language – A brief synopsis

Algebraic Logic Functional Programming Language is a multi-paradigm programming language that is a combination of functional programming and logic programming. ALF program statements are compiled into instructions of an abstract machine. An emulator written in C executes the programs of the abstract machine.